Home / 130,502.12-180,179.69-100,233.33

Finding the Fourth Proportional to 130,502.12, 180,179.69 and 100,233.33

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Solution

The fourth proportional to 130,502.12, 180,179.69 and 100,233.33 is: 138,388.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,502.12 : 180,179.69 = 100,233.33 : x
  2. Step 2: Convert to fraction form
    130,502.12/180,179.69 = 100,233.33/x
  3. Step 3: Cross multiply
    130,502.12x = 180,179.69 × 100,233.33
  4. Step 4: Simplify right side
    130,502.12x = 18,060,009,825.90
  5. Step 5: Solve for x
    x = 18,060,009,825.90/130,502.12
  6. Step 6: Final answer
    x = 138,388.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.